// Align to a line, assuming we start at or just beyond it, but stop if we hit the STOP color with either sensor
void alignLine(FloorColor color, int speed, FloorColor stop = UNKNOWN, bool reverse = false) {
// Spin ~180 if we've been asked to align in reverse
if (reverse) {
// Nudge forward
runDriveMotors(100, 100);
wait1Msec(150);
// Spin in place
runDriveMotors(100, -100);
wait1Msec(1500);
stopDriveMotors();
}
// Start our turn to get the front sensor on the line
while(!onColor(color, LSvalRaw(lineLeft))) {
// Stop alignment efforts if we hit the specified stop floor color
if (stop != UNKNOWN && (onColor(stop, LSvalRaw(lineRight)) || onColor(stop, LSvalRaw(lineLeft)))) {
break;
}
// Turn in place
runDriveMotors(speed, -1 * speed);
}
stopDriveMotors();
// When the back sensor is on the line, we're aligned
while(!onColor(color, LSvalRaw(lineRight))) {
// Stop alignment efforts if we hit the specified stop floor color
if (stop != UNKNOWN && (onColor(stop, LSvalRaw(lineRight)) || onColor(stop, LSvalRaw(lineLeft)))) {
break;
}
// Drive forward until the front sensor is clear of the line
// TODO: Adjust onColor to provide more useful results, so we can invert this test
if (!onColor(GREY, LSvalRaw(lineLeft))) {
runDriveMotors(speed, speed);
// Turn while neither sensor is on the line
} else if (!onColor(color, LSvalRaw(lineRight)) && !onColor(color, LSvalRaw(lineLeft))) {
runDriveMotors(speed, 0);
}
}
// Always stop when we're done
stopDriveMotors();
}
// Follow a line, after we've been aligned to it, stopping based on color, distance, or time
void _followLine(FloorColor color, int speed, FloorColor stopColor, int stopDistance, int stopTime) {
// Reset the drive encoder if we're going to use it
if (stopDistance != 0) {
resetDriveEncoder();
}
// Loop until we hit a stop condition
while (true) {
if (stopColor != UNKNOWN && (onColor(stopColor, LSvalRaw(lineRight)))) {
break;
} else if (stopDistance > 0 && readDriveEncoder() > stopDistance) {
break;
} else if (stopDistance < 0 && readDriveEncoder() < stopDistance) {
break;
} else if (stopTime > 0 && true) {
// Can we check elapsed time?
break;
}
if (onColor(color, LSvalRaw(lineLeft))) {
runDriveMotors(0, speed);
} else if (onColor(color, LSvalRaw(lineRight))) {
runDriveMotors(speed, 0);
} else {
runDriveMotors(speed, speed);
}
}
// Always stop when we're done
stopDriveMotors();
}
task main()
{
untilButtonPress(vexRT[Btn8U]);
setDriveLeftRight(90, 100);
waitInMilliseconds(3000);
stopDriveMotors();
waitInMilliseconds(100);
setDriveLeftRight(100, -100);
waitInMilliseconds(600);
stopDriveMotors();
waitInMilliseconds(100);
setDriveLeftRight(90, 100);
waitInMilliseconds(1000);
stopDriveMotors();
//while (true)
{
//setDriveLeftRight(vexRT[Ch3], vexRT[Ch2]);
//controlFlipper();
//controlScissorLift();
//motor[LeftDriveA] = vexRT[Ch3];
//motor[LeftDriveB] = vexRT[Ch3];
//motor[RightDriveA] = vexRT[Ch2];
//motor[RightDriveB] = vexRT[Ch2];
}
}